Wikiposts
Search
Questions If you are a professional pilot or your work involves professional aviation please use this forum for questions. Enthusiasts, please use the 'Spectators Balcony' forum.

TCAS Avoidance

Thread Tools
 
Search this Thread
 
Old 10th Feb 2001, 03:00
  #1 (permalink)  
Speedbird744
Guest
 
Posts: n/a
Question TCAS Avoidance

Concerning TCAS alerts,
If pilots monitor any other traffic on their ND's. Why are there some many near misses? If there is TCAS alerting the pilot, why can't the pilot avoid it in advance????
 
Old 10th Feb 2001, 15:20
  #2 (permalink)  
AYLGR
Guest
 
Posts: n/a
Post

1. Not all a/c have TCAS or transponders
2. Not all heights are verified
3. Level busts
4. Poor ATC separation instruction
5. Pilot error

Any more?

Bob
 
Old 12th Feb 2001, 14:52
  #3 (permalink)  
AffirmBrest
Guest
 
Posts: n/a
Post

6. Not all TCAS aircraft have a nice ND with Traffic display
7. Pilots have more important things to do in the TMA than stare at the little blips all the time
8. We do not maneuver based on proximity or Traffic alerts alone, to do so would cause all sorts of problems with co-ordination of the TCAS in the aircraft concerned, with other a/c in the vicinity, etc. Watching the blip may prompt a pilot to query something with ATC but you just cannot take your own evasive action based on the traffic display, particularly in CAS. We should NEVER make avoiding manuevers based on the lateral position of displyed traffic - simply because the accuracy is not high enough to be safe.

I see a bit of a nonsense in your question (not being rude - honest!) - the whole point of TCAS IS that pilots make co-ordinated manuevers in advance of a COLLISION. That's what TCAS alerts do. There would be little benefit in manuevering just to avoid an ALERT, when that would cause workload problems for all concerned, and possibly conflict with other aircraft in the TMA.

And besides, define 'so many' near misses?
Much of the sensationalist world media would suggest that a correctly carried out TCAS manuever is a 'near miss', when in fact it actually PREVENTED one! SO pilots DO avoid near misses by manuevering in advance!

And who says that a responsibilty of the pilot is to 'monitor any other traffic on their NDs'? Sounds lke the responsibility of Air Traffic (though of course we all do the best we can) - see item no. 7.

Hope my ha-pennorth gives food for thought...

------------------
...proceeding below Decision Height with CAUTION...
 

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.